If you look at the GPH Between the two. Hydor with their highest output model being close to 1200GPH. and Tunzes lowest output at close to 1600GPH. I doubt there will be anything for tunze to worry about as there is no direct competition between the two. They will both have different applications in different systems.
I dunno, looking at all those models(?? were they different models in the vid?) right in the middle of the tank there was absolutely no movement of that anemone, like there wasn't any movement at all, sure the xenia over the right a bit was bent in the current, but that might have come from that tunze in the corner. Sure the surface got agitated like hell, but that's not exactly where I want to see my flow occuring